I'd advise buying your tickets well in advance if you want to travel in August.

要是想在八月份去旅行，我建议及早购票。

《牛津词典》

You are advised to make travel arrangements well in advance, especially when you plan to travel abroad.

建议你事先做好旅行准备，尤其是打算出国旅游的时候。

youdao

Another way companies are trying to lock in business is to offer discounts on advance bookings far earlier than they used to, including peak summer and fall travel periods.

旅游企业尝试保持业务的另一方式是，推出比之前提前时间早许多的提前预订折扣，包括了夏秋旅游旺季折扣价格。

youdao

All of these services sell tickets online, so plan and book your travel in advance.

BBC: Navigating the London 2012 exodus

They also advise buying travel tickets in advance to avoid long waits in lines.

CNN: What's on during Diamond Jubilee weekend

In Europe, for example, rail operators offer a wide range of fares and discounts for those who book in advance, travel at odd times or bundle the fare with a packaged holiday much as airlines have long done.

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